Preliminary syntax highlighting support.  New functions colortoint() and parse_color() in rcfile.c, new code in edit_add() in winio.c to actually do the highlighting.  It's not even close to pretty yet :P


git-svn-id: svn://svn.savannah.gnu.org/nano/trunk/nano@910 35c25a1d-7b9e-4130-9fde-d3aeb78583b8